检索结果-南通市图书馆

在线全文

学校读者我要写书评

暂无评论

阿兰胡埃斯满城西班牙式的哀愁与风情

环球人文地理 2024年第9期 144-153页

作者：叶时 vli86 JoseG eyeem＿selected tomas crisflores ABUELO RAMIRO Carlos Z Nacho unsplash flickr

阿兰胡埃斯，西班牙中部的一座小城。它和一曲同名吉他协奏曲一起，将风情送给全世界。在马德里以南约50公里处，哈拉马河与塔霍河交汇，形成了一个凉爽又肥沃的河谷，几百年来，西班牙历代国王在这里度过春夏。岁月流转，河谷上的王宫...

阿兰胡埃斯，西班牙中部的一座小城。它和一曲同名吉他协奏曲一起，将风情送给全世界。在马德里以南约50公里处，哈拉马河与塔霍河交汇，形成了一个凉爽又肥沃的河谷，几百年来，西班牙历代国王在这里度过春夏。岁月流转，河谷上的王宫、花园、水渠、古城被列入世界文化遗产，而一曲家喻户晓的同名吉他曲——《阿兰胡埃斯协奏曲》，更是用哀婉动人的旋律，将城市阿兰胡埃斯的名字带到了世界各地。

关键词：

Traces of weighted function spaces: Dyadic norms and Whitney extensions

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Science China Mathematics 2017年第11期60卷 1981-2010页

作者： KOSKELA Pekka SOTO tomas WANG Zhuang Department of Mathematics and Statistics University of Jyvskyl

The trace spaces of Sobolev spaces and related fractional smoothness spaces have been an active area of research since the work of Nikolskii, Aronszajn, Slobodetskii, Babich and Gagliardo among others in the 1950's. In this paper, we review the literature concerning such results for a variety of weighted smoothness spaces. For this purpose, we present a characterization of the trace spaces(of fractional order of smoothness),based on integral averages on dyadic cubes, which is well-adapted to extending functions using the Whitney extension operator.

关键词： trace theorems weighted Sobolev spaces Besov spaces Triebel-Lizorkin spaces

Advanced methods of cell phone localization for crisis and emergency management applications

在线全文

学校读者我要写书评

暂无评论

International Journal of Digital Earth 2015年第4期8卷 259-272页

作者： tomas Reznik Bronislava Horakova Roman Szturc Department of Geography Masaryk UniversityBrnoThe Czech Republic Intergraph CS PragueThe Czech Republic

Real-time people localization cannot be achieved through statistical methods during crisis/emergency management *** International Mobile Subscriber Identity(IMSI)catcher was proposed as a nontraditional method for cell phone-based people *** verified the idea of using a cell phone as a sensor and tested the possibility of transmitting cell phone data through the Open Geospatial Consortium(OGC)Sensor Web *** large field tests were performed and are described in *** main conclusions for IMSI catcher deployment were search within a limited radius from its placement and the number of localized people was not a limiting aspect;although the technology for advanced cell phone-based localization is available for crisis/emergency management applications,we do not yet have sufficient ability to handle this technology.

关键词： emergency support system field tests IMSI catcher sensor web enablement

Green-light fundus autofluorescence in diabetic macular edema

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

International Journal of Ophthalmology(English edition) 2013年第1期6卷 75-80页

作者： Lukas reznicek Simeon Dabov Christos Haritoglou Anselm Kampik Marcus Kernt Aljoscha S Neubauer Department of Ophthalmology Ludwig Maximilians University

AIM:To evaluate the role of central green-light fundus autofluorescence (FAF) in diabetic macular edema(DME). METHODS:A consecutive series of 92 study eyes with diabetic retinopathy were included. Out of those, 51 diabetic eyes had DME and were compared to 41 diabetic eyes without DME. In all subjects, green-light FAF images were obtained, quantified and classified into various FAF patterns. Cross-sectional optical coherence tomography (OCT) scans were obtained for evaluation of Inner/Outer segment (IS/OS) layer integrity, measurements of central RPE-IS/OS layer thickness as well as classification of DME into various subtypes. ·RESULTS:Meancentralgreen-lightFAFintensityofeyes with DME (1.289 ±0.140)log did not significantly differ from diabetic patients without DME (1.317 ±0.137)log. Most classifiable FAF patterns were seen in patients with cystoid DME. Mean central retinal thickness (CRT) of all study eyes with DME was (501.9±112.4)μm compared to (328.2±27.0)μm in diabetic patients without DME. Patients with DME had significantly more disrupted photoreceptor IS/OS layers than diabetic patients without DME (28/51 vs 5/41, P <0.001). Mean RPE-IS/OS thickness of patients with DME (60.7±14.1)μm was significantly (P<0.001) lower than in diabetic eyes without DME (73.5 ±9.4)μm. Correlation analysis revealed non-significant correlations of green-light FAF intensity and OCT parameters in all subtypes of DME. ·CONCLUSION:Our results indicate a poor correlation of central green-light FAF intensity with CRT, IS/OS layer integrity or RPE-IS/OS layer thickness in diabetic patients with or without DME and its various subtypes. Thus, central green-light FAF is not suitable for detection of retinal thickening in DME.

关键词： diabetic macular edema fundus autofluorescence optical coherence tomography

Pettifor maps of complex ternary two-dimensional transition metal sulfides

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

npj Computational Materials 2022年第1期8卷 1692-1702页

作者： Andrea Silva Jiangming Cao tomas Polcar Denis Kramer Faculty of Engineering and Physical Sciences University of SouthamptonUniversity RoadSO171BJSouthamptonUK National Centre for Advanced Tribology Study University of SouthamptonSouthamptonUK Faculty of Mechanical and Civil Engineering Helmut-Schmidt-Universität/Universität der Bundeswehr HamburgHolstenhofweg 8522043HamburgGermany Advanced Materials Group Department of Control EngineeringFaculty of Electrical EngineeringCzech Technical University in Prague(CTU)PragueCzech Republic Department of Heterogeneous Catalysis Helmholtz-Zentrum HereonMax-Planck-Strasse 1GeesthachtGermany

Alloying is an established strategy to tune the properties of bulk compounds for desired *** the advent of nanotechnology,the same strategy can be applied to 2D materials for technological applications,like single-layer transistors and solid *** we present a systematic analysis of the phase behaviour of substitutional 2D alloys in the Transition Metal Disulfides(TMD)*** phase behaviour is quantified in terms of a metastability metric and benchmarked against many-body expansion of the energy *** show how the metastability metric can be directly used as starting point for setting up rational search strategies in phase space,thus allowing for targeted further computational prediction and analysis of *** results presented here also constitute a useful guideline for synthesis of TMDs binary alloys via a range of synthesis techniques.

关键词： alloys sulfide behaviour

Individual variation in dispersal associated behavioral traits of the invasive Chinese mitten crab （Eriocheir sinensis, H. Milne Edwards, 1854） during initial invasion of Lake V^inern, Sweden

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Current Zoology 2014年第3期60卷 410-416页

作者： tomas BRODIN Marcus K. DROTZ Department of Ecology and Environmental Science Umea University Sweden Lake Vanem Museum of Natural and Cultural History Framnisvsgen 2 53154 Lidkoping Sweden

Understanding and predicting species range-expansions and biological invasions is an important challenge in modem ecology because of rapidly changing environments. Recent studies have revealed that consistent within-species variation in behavior （i.e. animal personality） can be imperative for dispersal success, a key stage in the invasion process. Here we investigate the composition and correlation of two important personality traits associated with invasion success, activity and boldness, and how they are connected to sex and individual size in a newly colonised population of the Chinese mitten crab Eriocheir sinensis in Lake Vanem, Sweden. We found no effect of sex or size on behavioral expressions orE. sinensis but a clear positive correlation between boldness and activity. In addition, this study generates important baseline data for monitoring behavioral develop ment, and thereby changing ecological impact, of an invading population over time. This has implications for predicting ecological effects of invasive species as well as for managing ecological invasions.

关键词： Eriocheir sinensis Biological invasion Behavior Boldness Activity Invasion front

Design of deformable mirrors for high power lasers

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

High Power Laser Science and Engineering 2016年第2期4卷 68-74页

作者： Stefano Bonora Jan Pilar Antonio Lucianetti tomas Mocek CNR-IFN HiLASE Centre Institute of Physics AS CR Department of Physical Electronics Faculty of Nuclear Sciences and Physical EngineeringCzech Technical University in Prague

We present the workflow of the design, realization and testing of deformable mirrors suitable for high power diode pumped solid-state lasers. It starts with the study of the aberration to be corrected, and then it continues with the design of the actuators position and characteristic. In this paper, we present and compare three deformable mirrors realized for multi-J level laser facilities. We show that with the same design concept it is possible to realize deformable mirrors for other types of lasers. As an example, we report the realization of a deformable mirror for femtosecond lasers and for a CW CO_2 laser.

关键词： adaptive optics closed loop deformable mirror high power lasers

Maintenance of Genome Stability

在线全文

学校读者我要写书评

暂无评论

Genomics, Proteomics & Bioinformatics 2016年第3期14卷 119-121页

作者： Jiadong Wang tomas Lindahl Institute of Systems Biomedicine Department of Radiation MedicineSchool of Basic Medical SciencesPeking University Cancer Research UK London Research Institute Clare Hall Laboratories

It was ever thought that genomic information is transmitted faithfully from generation to generation. But our current knowledge does not indicate that it is the case. For example, genomic variations can be generated from DNA replication infidelity and unequal chromosome segregation. Natural decay of DNA molecules is also a fundamental source of changing genomic information. In addition, cellular and organismal exposure to exogenous genotoxic agents such as ultraviolet （UV） light, oxidative stress, chemical mutagens, and radiation can lead to a variety of modifications on DNA constituents, resulting in genome alterations. Fortunately, cells have evolved several response systems to tackle numerous DNA lesions in order to maintain their genome integrity. Among them, check- point control is probably the most well-known one. For exam- ple, checkpoint responds to replication stress, replication fork stalling, double-strand DNA breaks, and various other types of DNA lesions. Increasing experimental evidence indicates that genomic instability is probably the fundamental reason for carcinogenesis. Genomic instability is also found to be a main etiological factor of neurodegenerative diseases, aging, immunodeficiency, etc. Thus, to understand how cells regulate to maintain their genomic stability is of fundamental importance.

关键词： genomic Genome chromosome DNA segregation replication decay eukaryotic ultraviolet transmitted

Engineering heterogenous catalysts for chemical CO_(2) utilization:Lessons from thermal catalysis and advantages of yolk@shell structured nanoreactors

在线全文

学校读者我要写书评

暂无评论

Journal of Energy Chemistry 2021年第6期30卷 304-324,I0008页

作者： Cameron Alexander Hurd Price tomas Ramirez Reina Jian Liu DICP-Surrey Joint Centre for Future Materials Department of Chemical and Process EngineeringUniversity of SurreyGuildfordSurrey GU27XHUK State Key Laboratory of Catalysis Dalian Institute of Chemical PhysicsChinese Academy of SciencesDalian 116023LiaoningChina

The development of catalytic materials for the recycling CO_(2) through a myriad of available processes is an attractive field,especially given the current climate *** there is increasing publication in this field,the reported catalysts rarely deviate from the traditionally supported metal nanoparticle morphology,with the most simplistic method of enhancement being the addition of more metals to an already complex *** catalysts,especially yolk@shell catalysts with hollow voids,offer answers to the most prominent issues faced by this field,coking and sintering,and further potential for more advanced phenomena,for example,the confinement effect,to promote selectivity or offer greater protection against coking and *** work serves to demonstrate the current position of catalyst development in the fields of thermal CO_(2) reforming and hydrogenation,summarizing the most recent work available and most common metals used for these reactions,and how yolk@shell catalysts can offer superior performance and survivability in thermal CO_(2) reforming and hydrogenation to the more traditional ***,this work will briefly demonstrate the bespoke nature and highly variable yolk@shell ***,this review aims to illuminate the spatial confinement effect and how it enhances yolk@shell structured nanoreactors is presented.

关键词： Yolk@shell CO_(2)utilization Reforming Hydrogenation Confinement effect